Commercial Tenant Improvement Permit — Centennial, Colorado · Requirements sheet
Verified 2026-08-02 · Source: https://www.centennialco.gov/Government/Departments/Building/Commercial-Alterations-Plans-Checklist
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Commercial Tenant Improvement Permit in Centennial, Colorado
Required for 'reconfiguring existing spaces, extending existing spaces, renovating existing spaces to include remodels, and new tenant finishes' in commercial buildings — Centennial publishes 'Commercial Tenant Improvement' as its own named permit classification, distinct from both 'Commercial New' and 'Commercial Alterations' (the Alterations classification covers work including tenant finish that ADDS to the building footprint). Reviewed against the 2021 IBC/IEBC under the City's Commercial Alterations Plans Checklist, which the City states applies to 'commercial alteration (tenant improvement) projects'. TI review is 10 business days — faster than the 15-day new-commercial track. A separate South Metro Fire Rescue submittal and permit is required for TI projects.
Verified 2026-08-02 · Source
When you need this permit
- 'Commercial Tenant Improvement' is a distinct classification: 'Reconfiguring existing spaces, extending existing spaces, renovating existing spaces to include remodels, and new tenant finishes', per the City's Building Permit Classifications page; footprint-adding tenant finish falls under 'Commercial Alterations' instead — both share the same 10-business-day review row
- Complete signed and sealed (by a Colorado registered design professional) architectural plans, structural plans, and material specifications must be submitted online to Centennial's Self-Service Portal
- Complete Code Analysis required: uses and occupancy classification(s) for all portions of the building, mixed-use design approach, construction type, and EXISTING fire protection systems
- Means-of-egress details with occupant loads per floor, exit arrangement/sizes, corridors, doors, stairs; exit signs and egress lighting with power supply; accessibility scoping provisions
- Site plan (recommended scale 1/8" = 1'-0") showing all existing structures, lot dimensions, and building footprint with dimensions to property lines
- Mechanical, electrical, and plumbing plans signed and sealed by a Colorado registered design professional covering all CHANGES to each system (ventilation schedules with outdoor-air calculations, kitchen hood/grease duct details, panel schedules with AIC rating and fault current, plumbing fixture counts by occupant load, etc.) per the Commercial Alterations Plans Checklist
- Separate submittal and permit from South Metro Fire Rescue is required for commercial alteration (tenant improvement) projects; kitchen hood fire suppression systems need their own separate SMFR submittal and permit; general fire protection details are a deferred submittal to SMFR
- Building Materials Use Tax deposit (2.5% City + 0.25% Arapahoe County on 50% of estimated valuation) paid prior to permit issuance
- Permits and contractor licenses must be applied for online; contractors performing work must be licensed by the City of Centennial Contractor
Required documents
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Fee schedule
Review timeline
Inspection process
- 1
Rough Trades (framing, mechanical, electrical, plumbing)
Rough inspections of partition framing and changed MEP systems before concealment, including fire/smoke damper installations at rated-assembly penetrations; scheduled online via the City's inspection portal. The City does not publish a fixed enumerated TI inspection sequence — the exact card is set at permit issuance
- 2
Final / Certificate of Occupancy
All inspections passed, Building Division notified by email, then CO (or 30-day TCO, $800) requested via the Commercial CO/TCO Request Application; South Metro Fire Rescue final approval runs on its own permit
See the full Centennial inspection guide — scheduling & re-inspection fees →
Tips
- Centennial genuinely splits tenant work into TWO classifications: 'Commercial Tenant Improvement' (reconfigure/remodel/new tenant finish within the existing envelope) and 'Commercial Alterations' (work including tenant finish that ADDS to the building footprint). Both sit on the same 10-business-day review row, but classify correctly at application — the definitions are the City's own.
- The TI track at 10 business days is 5 days faster than new commercial construction — but the separate South Metro Fire Rescue permit (required for all TI projects) can be the critical path; submit to SMFR in parallel, not after City approval.
- Kitchen/restaurant TIs carry a third permit layer: hood fire suppression systems need their own separate South Metro Fire Rescue submittal and permit beyond the general SMFR TI permit.
- The Code Analysis must document EXISTING fire protection systems — Denver Tech Center-era office buildings frequently have legacy systems, and this is called out explicitly in the City's checklist.
- No distinct large-office or multi-tenant-building track exists for the DTC corridor; every TI, from a suite repaint-plus-partitions to a full floor-plate gut, runs through the same classification and 10-day row.
- Even scope-limited TI plans must be signed and sealed by a Colorado registered design professional — there is no published small-project exemption from the design-professional requirement for commercial work.
Frequently asked questions
Sources & verification
Verified against official sources. Last reviewed 2026-08-02.
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Centennial building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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